WA policeman charged over gun waving

A police officer has been charged after he allegedly waved a gun at colleagues during a "drunken rampage" inside the Port Hedland station in Western Australia's Pilbara region.

Police Commissioner Karl O'Callaghan said incident on Saturday night was being investigated, but didn't comment beyond that as the officer hasn't appeared in court yet.

The officer was reportedly off duty at the time and obtained the gun from the armory.

He has been charged with unlawful damage, possessing a firearm while intoxicated, pointing a firearm at another person and creating a false belief.

Internal affairs is also investigating claims three constables at nearby South Hedland police station dumped two Aboriginal boys, aged 14, on the town's outskirts at night after they had been allegedly throwing rocks at cars.

A relative complained after the pair were forced to make their way back home and the officers were stood down from duties last week.

Mr O'Callaghan said he expected the investigation would be complete in the next week or so and was one of several underway, prompting concerns there may be a cultural problem at the South Hedland station.